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(No Model.)

-J.H.BA.KER. AIR oomrnssoa. No. 259,741. Patented June 20, 1882.

u, PETERS. Pllaloliflmgrlphnr. Walhirlgton. n. c.

UNITED STATES PATENT OFFICE.

JAMES H. BAKER, OF SIARATQGA SPRINGS, NEW YORK.

A l R-COM PRESSO R.

SPECIFICATION forming part of Letters Patent No. 259,741, dated June 20,1882.

Application filed February 25, 1882. filo model.)

To all whom it may concern r Be it known that I, JAMES H. BAKER, of Saratoga Springs, in the county of Saratoga and State of New York, have invented an Improvement in Air-Oompressors,'of which the following is a specification.

The object of this invention is to use the power of a water-pressure to pump air into a holder in such a manner that there will be a slight compression of the air sufficiently to produce a current thereof through a pipe. These air-compressors are adapted to gasoline-machinesin which air is passed over or in contact with gasoline and vaporizes the same, so that it can be burned as a gas; or-these air-compressors may be used for supplying atmosphere to coal-oil or other lamps to produce a perfect combustion without the use of a chimney.

My invention relates to thecombinations of devices hereinafter set forth, whereby the aircompressor is rendered more uniform in its operation and cheaper in its construction.

In the drawings, Figure 1 is a plan of the apparatus. Fig. 2 is a vertical section, and Fig. 3 is a section in larger size of the watervalve and diaphragm.

The vessel A is by preference cylindrical, and within it there are two stand-pipes, b and c, that are vertical branches from the horizontal pipe 01. There are two valves, 6 and c, in this pipe d. One of them admits air to the apparatus; the other, 6, allows air to pass through the stand-pipe b to the stand-pipe c.

There are guide-rods, f f and g, passing from the bottom of the vessel A to the frame h, that is above the vessel A,and rises to such ersthatis, they are inverted cylinders closed at top and open at the bottomand they have tubes running through them for the passage of the guide-rods ff and g, so that they are free to slide up and down. The holder L is of a weight that is sufficient to give thenecessary pressure to air confined within it by the water; or the said holder L may be weighted, as in ordinary gas-holders. The holder M is annular, and it is within the vessel A and surrounds the holder L. This holder M can be moved up or down upon the guiderods ff. When the holder M is moved up it draws air into itself through the pipes 11 b, the valve 6 opening. When the holder M descends it forces the air through the pipe b, opening the valve 6 and causing the holder L to rise. This varies the pressure of the air but little, because the holder L will rise by a very small increase of pressure of the air within such holder L. The a r passes away uninterruptedly by the pipe at to the burner or lamp or other device where it is to be used.

The lever 19 is pivoted at 3, and its end is forked to pass at the sides of the vessel A and be connected by the links 1" with the opposite sides of the holder M; and usually the weight of this vessel M will be sufficient to cause it to descend and force the air into the holder L, as aforesaid. ,I-n this case it is necessary to apply a forceto lift the holder M and draw the air into itself. This I effect by the pressure of water acting upon the diaphragm sin the regulator T. There is a valve, u, in the water passage-way '0, there being a supply-pipe at 5 and a discharge-pipe at 6.

The small diaphragm l ma chamber, 70, is connected by a rod, 8, with the valve to, and a small valve, 9, at the'water-inlet to the chamber 70, is on a rod, 13, and operated by a traveler, 12, upon the holder M, coming into contact with one or the other of the tappets 15 or 16 on the 'rod 13, so as to open the valve 9 when the holder M'reaches its lowest point and admit water to move the diaphragm s and valve u, so that the water-pressure, acting upon the diaphragm, raises the lever 11 and holder M, drawing in the air, as aforesaid. When the holder M reaches its extreme upward movement the valve a is moved the other way and the escape of water is permitted, so that the holder M descends by its own weight.

I claim as my invention- 1. The combination, with the holders L M and vessel A, of the air-tubes b c d,valves c e, lever 1), actuating-diaphragm, and inlet watervalve, substantially as set forth.

2. The combination, with the holders L M and vessel A, of the air-tubes and valves, the

lever 19, and the diaphragm l, the water-valve 9 and valve to, and diaphragm s, substantially as set forth.

Signed by me this 18th day of February, A. D. 1882.

JAMES H. BAKER.

Witnesses:

GEO. T. PINCKNEY, I HAROLD SERRE L. 

